Patterson RC - Repairs and Replacement; Impeller and Mechanical Seal Removal; Cleaning

5
SECTION VI
REPAIRS AND REPLACEMENT
WARNING!!!
Whenever any disassembly work is to be done on the pump, disconnect the power source to the driver to
eliminate any possibility of starting unit. It is advisable that a qualified Pump service technician does the
disassembly and reassembly of the pump.
6-1 To Remove Impeller and Mechanical Seal
Reference: Pump Assembly Section for the particular pump type
Types CC and CS - To Remove Impeller and Mechanical Seal
1. Remove bolting holding volute (1) to volute cover (11).
2. Pull motor and impeller assembly from the volute.
3. Rem ove impeller (2) from the motor shaft by turning the impeller screw (26)
counterclockwise.
4. Mechanical seal (65) may now be removed.
Type RC - To Remove Mechanical Seal
1. Remove bolting holding rigid coupling (314) to motor shaft (10) and pump shaft (6).
2. Remove bolting holding gland (17) to volute cover (11).
3. Mechanical seal (65) may now be removed.
Type RC - To Remove Impeller
5. Remove bolting holding volute (1) to volute cover (11).
6. Pull motor and impeller assembly from the volute.
7. Remove impeller (2) from the motor shaft by turning the impeller screw (26)
counterclockwise.
6-2 Cleaning:
WARNING!!!
Petroleum based cleaning solvents are flammable. Smoking or open flames in the vicinity of these
solvents is extremely hazardous and must not be permitted. Disregarding this warning could result in
grave personal injury.